Solve for k.


5≤
k–10
3
<

2
Write your answer as a compound inequality with integers.

1 answer

We need to solve the compound inequality:

\[ -5 \leq \frac{k - 10}{3} < -2 \]

To eliminate the fraction, we can multiply all parts of the inequality by 3. However, we must remember that since 3 is positive, we do not change the direction of the inequalities:

\[ -5 \cdot 3 \leq k - 10 < -2 \cdot 3 \]

This gives us:

\[ -15 \leq k - 10 < -6 \]

Next, we will add 10 to all parts of the compound inequality to isolate \( k \):

\[ -15 + 10 \leq k < -6 + 10 \]

Simplifying the inequalities, we get:

\[ -5 \leq k < 4 \]

Now, writing the answer as a compound inequality with integers, we have:

\[ k \in [-5, 4) \]

So the solution in compound inequality form is:

\[ -5 \leq k < 4 \]